Qualcomm-QCA61x4A-QCA9377-Wi-Fi-and-Bluetooth-Drivers are missing

About a few months ago my wifi and bluetooth were missing, I downloaded and installed the latest drivers and it worked. Now after recently installing a Windows Update (2017-10 Cumulative Update for Windows 10 Version 1703 for x64-based Systems (KB4041676)), it's not working again.

I've tried device manager (delete device, restart, scan for new hardware changes), I've updated all latest drivers, bios, etc. I've checked bios to see if it was disable and it doesn't even show that it is installed, I've uninstalled recent windows update, and I've gone to Services.msc and switched bluetooth from manual to automatic.

RE: Qualcomm-QCA61x4A-QCA9377-Wi-Fi-and-Bluetooth-Drivers are missing

I also had issue with Qualcomm-QCA61x4A missing from device manager. All the suggestions I saw online are not related, and it's not any obvious human error (e.g., airplane mode, disabled, driver, or any message error that could be found from system, etc.). Based on original post, I believe Italia18 didn't make such obvious error as well. I further used F12 diagnose option during start up and found wlan is uninstalled, thus I believe it's hardware failure. I just replaced it with intel 8265 and everything is good now (mine is desktop, I'm not sure if it's easy to replace the wireless card on laptop).